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Of, relating to, or designating research or other academic work preparatory to the award of a doctorate; (of a person) engaged in work of this kind.
1930s; earliest use found in The American Economic Review. From pre- + doctoral.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。